Shorter dozes were linked to reduced blood levels of high density lipoprotein — the form of cholesterol that helps keep arteries healthy.

Lead researcher Dr Laura Hardie, from the Univesity of Leeds, said: "Because we found that adults who reported sleeping less than their peers were more likely to be overweight or obese, our findings highlight the importance of getting enough sleep.

"How much sleep we need differs between people, but the current consensus is that seven to nine hours is best for most adults."

Research had previously suggested that lack of sleep can stimulate a desire for junk food.

This new study has not found any relationship between less sleep and a less healthy diet.

MOST READ IN HEALTH

MIND OVER MATTER

What are the symptoms of anxiety, how can it be treated and who else suffers? From Zayn Malik to Will Young

PASSION PEAKS

This is the age when your sex drive will be at its most rampant (and girls, it might surprise you)

NOT JUST SPOTS!

Six common types of bumps on your skin - and the ones that could be deadly

Home remedies

What causes mouth ulcers and how to treat them with stuff you have at home